<?php

namespace App\Tool;

class Helper
{
    /**
     * 反转1维数组的key和value
     *
     * @param $arr
     * @return array
     */
    static function reverseArr($arr)
    {
        $arrNews = [];
        foreach ($arr as $k => $value) {
            $arrNews[$value] = $k;
        }
        return $arrNews;
    }

    /**
     * 微信解密手机号码
     *
     * @param $encryptedData
     * @param $iv
     * @param string $sessionKey code换取的session_key参数
     * @return false|string|object
     */
    static function decryptDataWx($encryptedData, $iv, string $sessionKey)
    {
        if (empty($sessionKey)) return false;
        if (strlen($iv) != 24) return false;
        $aesIV = base64_decode($iv);
        $aesCipher = base64_decode($encryptedData);
        $result = openssl_decrypt($aesCipher, "AES-128-CBC", base64_decode($sessionKey), 1, $aesIV);
        $dataObj=json_decode($result);
        if($dataObj == NULL) return false;

        $config = config('wechat.mini_program.default');
        if($dataObj->watermark->appid != $config['app_id']) {
            return false;
        }
        return $dataObj;
    }

    static function writeJson($code = 0, $result = null, $msg = null, $status = 200)
    {
        return response()->json([
            "code"  => $code,
            "msg"   => $msg ?? 'SUCCESS',
            "data"  => $result,
        ], $status, [
            'Content-Type'=>'application/json; charset=UTF-8'
        ]);
    }

    /**
     * 验证手机号码
     *
     * @param $phone
     * @return bool
     */
    static function hasPhone($phone)
    {
        return preg_match('/^1[0-9]{10}$/', $phone) === 1;
    }

    // 验证身份证号码
    static function is_idcard($id)
    {
        $id = strtoupper($id);
        $regx = "/(^\d{15}$)|(^\d{17}([0-9]|X)$)/";
        $arr_split = array();
        if(!preg_match($regx, $id))
        {
            return FALSE;
        }
        if(15==strlen($id)) //检查15位
        {
            $regx = "/^(\d{6})+(\d{2})+(\d{2})+(\d{2})+(\d{3})$/";

            @preg_match($regx, $id, $arr_split);
            //检查生日日期是否正确
            $dtm_birth = "19".$arr_split[2] . '/' . $arr_split[3]. '/' .$arr_split[4];
            if(!strtotime($dtm_birth))
            {
                return FALSE;
            } else {
                return TRUE;
            }
        }
        else      //检查18位
        {
            $regx = "/^(\d{6})+(\d{4})+(\d{2})+(\d{2})+(\d{3})([0-9]|X)$/";
            @preg_match($regx, $id, $arr_split);
            $dtm_birth = $arr_split[2] . '/' . $arr_split[3]. '/' .$arr_split[4];
            if(!strtotime($dtm_birth)) //检查生日日期是否正确
            {
                return FALSE;
            }
            else
            {
                //检验18位身份证的校验码是否正确。
                //校验位按照ISO 7064:1983.MOD 11-2的规定生成，X可以认为是数字10。
                $arr_int = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
                $arr_ch = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
                $sign = 0;
                for ( $i = 0; $i < 17; $i++ )
                {
                    $b = (int) $id[$i];
                    $w = $arr_int[$i];
                    $sign += $b * $w;
                }
                $n = $sign % 11;
                $val_num = $arr_ch[$n];
                if ($val_num != substr($id,17, 1))
                {
                    return FALSE;
                }
                else
                {
                    return TRUE;
                }
            }
        }
    }

    /**
     * 创建随机数字
     *
     * @param int $length
     * @return false|string
     */
    static function createRandNum(int $length)
    {
        $numStr = '0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789';
        $numStr = str_shuffle($numStr);
        return substr($numStr, 0, $length);
    }

    // 生成二维码图片
    static function makeQrCode($content, $size = 180)
    {
        try {
            $path = '/uploads/qr-code/'.md5($content).'.png';
            if (file_exists(public_path($path))) {
                return $path;
            }

            $qrCode = new \Endroid\QrCode\QrCode($content);
            $qrCode->setSize($size);
            $qrCode->setMargin(3); // 二维码的白边宽度

            $writer = new \Endroid\QrCode\Writer\PngWriter();
            $result = $writer->write($qrCode);
            $result->saveToFile(public_path($path));

            return $path;
        } catch (\Exception $exception) {
            \Log::error($exception);
            return false;
        }
    }
}
